"Free up storage space" warnings on Window 10

[GUBU]

Driving me to distraction.  Nearly a daily thing.  I deleted well over 1 gigabyte worth of stuff yesterday and am getting warning again today.

The numbers don't add up, I have 117 gigabytes filled with something, but it's not apps, my data, or programs.

I suspect Windows is just filling memory with everything I click on, post, look at, whatever and Windows never gets rid of it.

Heck, I deleted Google Earth, 500 megs worth a couple days ago, what the eff could be that big to accumulate since then ?   And let alone the over 1 gig I got rid of yesterday.  

Without sufficient memory, Windows says it's not updating anymore, but I'm wondering if that's a clue and old updates are clogging memory.

Saw something called Reimage that claims to fix it in 2 minutes but I'm loathe to turn something loose on my laptop that might eff it up.

Anyone else running Windows 10 with no memory ??

Could you have a programme that periodically overwrites free space. If that doesn't complete fully you often get folders filled with gigs of randomly named files.

I uninstalled ccleaner as last time I updated it the programme stealth installed (as in no warning) avast on my system.